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( R ) -2-Iodobutane is treated with Nal ...

` ( R )` -2-Iodobutane is treated with Nal in acetone and allowed to staned to stand for a long time The product eventually fromed is .

A

`(R )`-2-idobutane

B

`(S )`-2-idobutane

C

`(+- )`-2-idobutane

D

`(+- )-`2-idobutane

Text Solution

Verified by Experts

The correct Answer is:
B
2-Iodobutane is `2^(@) RX` in polar aprotic solvent such as acetone it proceeds via `S_(N)2` thus inversion of configuration takes place .
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